Home / 43,128.92-64,692.80-11,107.82

Finding the Fourth Proportional to 43,128.92, 64,692.80 and 11,107.82

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Solution

The fourth proportional to 43,128.92, 64,692.80 and 11,107.82 is: 16,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,128.92 : 64,692.80 = 11,107.82 : x
  2. Step 2: Convert to fraction form
    43,128.92/64,692.80 = 11,107.82/x
  3. Step 3: Cross multiply
    43,128.92x = 64,692.80 × 11,107.82
  4. Step 4: Simplify right side
    43,128.92x = 718,595,682.00
  5. Step 5: Solve for x
    x = 718,595,682.00/43,128.92
  6. Step 6: Final answer
    x = 16,661.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.